commit 5951f2300f43d75d344d542e171daed47a0382a6
author Serhiy Storchaka <storchaka@gmail.com> Thu Dec 24 10:35:35 2015 +0200
committer Serhiy Storchaka <storchaka@gmail.com> Thu Dec 24 10:35:35 2015 +0200
tree 2e173dda0c0d4c4bf887e8a6a309430d0d9cd5be
parent 6ed42ea08b3a961944e94f1dd941ffabc7657065

Issue #20440: Massive replacing unsafe attribute setting code with special
macro Py_SETREF.

Modules/_json.c

diff --git a/Modules/_json.c b/Modules/_json.c
index 5dac038..fede6b1 100644
--- a/Modules/_json.c
+++ b/Modules/_json.c
@@ -1717,8 +1717,7 @@
     }
     else if (PyUnicode_Check(s->encoding)) {
         PyObject *tmp = PyUnicode_AsEncodedString(s->encoding, NULL, NULL);
-        Py_DECREF(s->encoding);
-        s->encoding = tmp;
+        Py_SETREF(s->encoding, tmp);
     }
     if (s->encoding == NULL)
         goto bail;